Microsoft Windows 7 sales top 630m

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Microsoft claims around half a million PCs are upgrading to Windows 7 everyday, which has helped the firm shift 630 million software licenses since the operating system went on sale in October 2009.

http://www.itpro.co.uk/641623/microsoft-windows-7-sales-top-630m

 

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Second source

http://www.winbeta.org/news/windows-7-reaches-new-milestone-sells-over-630-million-copies